Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1d09888ab184480…

MALICIOUS

PDF

33.7 KB Created: 2021-06-22 09:23:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9312cc6f212f5de49bd6614becb82e06 SHA-1: 6b8378c777233ec63f89209ebb1b5c4ac28197e0 SHA-256: a1d09888ab1844805221477db429a1fd700d5f21a4acb5b6e1941479177d2510
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document contains a prominent link to download a game, which is a common lure for malware distribution. The ML classifier strongly indicated maliciousness, and the presence of multiple URLs associated with free game downloads and in-game currency further supports a phishing or malware distribution attempt. No scripts were extracted, but the document's structure and embedded URLs point to a malicious intent to trick users into downloading potentially harmful software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/479516143/minecraft-dungeons-free-download-pc-game-hack
    • https://limebug.com/media/storage/editor/files/free-robux-game-no-password_GM431946152.pdf
    • https://limebug.com/media/storage/editor/files/free-roblox-accounts-2021-with-robux_GM431946152.pdf
    • https://limebug.com/media/storage/editor/files/flame-gg-free-robux_GM431946152.pdf
    • https://limebug.com/media/storage/editor/files/coin-master-free-spins-coins_GM406889139.pdf
    • https://limebug.com/media/storage/editor/files/coin-master-spin-ml-link_GM406889139.pdf
    • https://limebug.com/media/storage/editor/files/games-like-coin-master-for-free_GM406889139.pdf
    • https://limebug.com/media/storage/editor/files/coin-master-gameplay_GM406889139.pdf
    • https://limebug.com/media/storage/editor/files/how-to-get-any-gamepass-on-roblox-for-free-2021_GM431946152.pdf
    • https://limebug.com/media/storage/editor/files/free-robux-codes-no-verification-2021_GM431946152.pdf
    • https://limebug.com/media/storage/editor/files/how-to-get-free-robux-without-downloading-apps_GM431946152.pdf
    • https://limebug.com/media/storage/editor/files/inappropriate-roblox-games-2021_GM431946152.pdf
    • https://limebug.com/media/storage/editor/files/roblox-jailbreak-hack_GM431946152.pdf
    • https://limebug.com/media/storage/editor/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • https://limebug.com/media/storage/editor/files/body-roblox_GM431946152.pdf
    • https://limebug.com/media/storage/editor/files/download-apps-for-robux_GM431946152.pdf
    • https://limebug.com/media/storage/editor/files/win-free-robux_GM431946152.pdf
    • https://limebug.com/media/storage/editor/files/creator-hack-roblox_GM431946152.pdf
    • https://limebug.com/media/storage/editor/files/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdf
    • https://limebug.com/media/storage/editor/files/free-spins-for-coin-master-that-work_GM406889139.pdf
    • https://limebug.com/media/storage/editor/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f3c.bin
404f899b5483a406f745d383498a3c638b39a42198d0f87fced2f2174ac809d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3C 21736 bytes
font_01_sfnt_off00005f2a.bin
05183faf73e067548e32258fc58809d25a8fef905510eff8eab59b37bb03aee7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2A 18872 bytes

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